4r79 THE OPETRATOrt. DECESreFR 1. 18S1.J ITEVT MECH^lTIGi^I. THE LAW BATTER!. mn IISTMIENT. ITITI Tin 4 H 1 UIJU THE GREATEST PATENT APPLIED FOR. … COMBIlSrED KEY A^NJD SOXJ]>^J)ER. NO BATTERY REQUIRED. Works perfectly as a KEY, with sound equal to best SOUNDER. For Morse Alphabet Practice in sending and reading by sound, and for Teaching the Morse Alphabet. Can be carried in the pocket or a small satchel, and is always ready for use. Price,…
Telegraph -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
